package ioperation;

import book.Book;
import book.BookList;

import java.util.Scanner;

public class DelOperation implements IOperation{
    @Override
    public void work(BookList bookList) {
        System.out.println("删除图书....");
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入你要删除的书名：");
        String name = scanner.nextLine();

        int currentSize = bookList.getUsedSize();

        int pos =-1;
        int i=0;
        for (; i <  currentSize; i++) {
            Book book = bookList.getBook(i);
            if(book.getName().equals(name)){
                System.out.println("找到了这本书");
                pos = i;
                break;
            }
        }
        if(i==currentSize){
            System.out.println("没有你要删除的书");
            return;
        }

        for (int j = 0; j < currentSize-1; j++) {
            Book book = bookList.getBook(j+1);
            bookList.setBooks(j,book);
        }

        bookList.setUsedSize(currentSize-1);
        System.out.println("删除成功");
    }
}
